The 2590-6 from KR Electronics (A Division of NIC) is a Band Pass Filter with Frequency 101.5 to 126.5 MHz, Bandwidth 25 MHz, Center Frequency 114 MHz, Insertion Loss 1.5 dB, Rejection 50 dB. Tags: Module with Connectors, Lumped Component Filter. More details for 2590-6 can be seen below.